package com.znsd.dining.room.utils;

import lombok.Data;

import java.io.Serializable;
import java.util.List;

/**
 * @ClassName PageUtils
 * @Description: TODO
 * @Author timi
 * @Date 2020/1/2
 * @Time 21:36
 * @Version V1.0
 **/
@Data
public class PageUtils implements Serializable {
    private static final long serialVersionUID = 1L;
    /**
     * 总记录数
     */
    private int totalCount;
    /**
     * 每页记录数
     */
    private int pageSize;
    /**
     * 总页数
     */
    private int totalPage;
    /**
     * 当前页数
     */
    private int currPage;
    /**
     * 列表数据
     */
    private List<?> list;
    
    public PageUtils() {
    }
    
    /**
     * 分页
     * @param list        列表数据
     * @param totalCount  总记录数
     * @param pageSize    每页记录数
     * @param currPage    当前页数
     */
    public PageUtils(List<?> list, int totalCount, int pageSize, int currPage) {
        this.list = list;
        this.totalCount = totalCount;
        this.pageSize = pageSize;
        this.currPage = currPage;
        this.totalPage = (int)Math.ceil((double)totalCount/pageSize);
    }
    
    public int getTotalPage() {
        if (this.totalPage == 0) {
            return 0;
        }
        int pages = getTotalCount() / getPageSize();
        if (getTotalCount() % getPageSize() == 0){
            return  pages;
        }
        return pages++;
    }
    
    
}
